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The authors describe the kinetic cerium arsenite method for measuring iodine in the urine using reagents made in Russia. The urine is prepared for analysis by wet calcination with a mixture of chlorous and perchloric acids. The method of synthesizing chlorous acid, preparing reagents, collecting urine, and procedure of analysis are described. The method was used for assessing iodine excretion with the urine in schoolchildren of Novosibirsk and Kemerovo.
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